Automatic lock slider



March 28, 1950 D. MARINsKY AUTOMATIC LOCK SLIDER Filed Aug. 5, 1944 Patented Mar. 28, 1950 AUTOMATIC LOCK SLIDER Davis Marinsky, Bronx, N. Y.; Louis H. Morin executor of said Davis Marinsky, deceased Application August 5, 1944, Serial No. 548,236

This invention relates to sliders for use on stringers of separable fasteners employing scoops having bevelled walls converging to side surfaces of the scoops. More particularly, the invention relates to sliders of the automatic locking type employing an elongated wire spring finger or rod, the free lock pin end of which extends angularly to enter recesses between adjacent bevelled wall scoops in retaining the slider against opening movement along the stringers. The novel features of the invention will be best understood from the following description when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed, and in which in separate parts are designated by suitable reference characters in each of the views and in which:

Fig. 1 is a sectional plan view of a Slider made according to my invention, showing only a part of a separable fastener, the section being substantially on the line l--I of Fig. 2.

Fig. 2 is a longitudinal diagrammatic sectional view on the line 2 2 of Fig. 1 diagrammatically showing a few scoops of the fastener.

Fig. 3 is a cross-sectional view on the irregular line 3 3 of Fig. 2 and also illustrating the fastener stringers in section.

Fig. 4 is a perspective view of the top wall only of the slider.

Fig. 5 is an inverted perspective view of the iingerpiece bar of the slider; and

Fig. 6 is a view similar to Fig. 2, showing only a part oi the construction and showing a modification.

In Fig. 1 of the drawing, 5 and 6 represent portions of two stringers of a separable fastener, to the adjacent beaded edges of which are attached scoops i. The scoops are of the type and kind more specifically disclosed in Patent 2,322,537, June 22, 1943, that is to say, the scoops having converging walls 8 at opposed side surfaces thereof, which form between the scoops recesses 9.

At Iii is shown a slider body of more or less conventional channel formation. The body lil comprises top and bottom walls II and I2 joined at the wide end of the body in a connecting web I3. The walls II and I2 have inturned side ilanges I4 for engaging the scoops 'I in coupling the stringers 5 and 6.

The wall Ii of the slider has centrally of the wide end thereof and above the web I3 an upstanding pin l5 employed to secure the looped end I6 of a spring lock finger Il to the slider by heading over the pin I5, as seen at i3.

The finger I1, in the construction shown, is in 2 Claims. (Cl. 2li-205.14)

the form of a spring wire or rod and the central portion I9 thereof is substantially straight and parallels the wall Il when the finger is in operative position. At the ends of the central portion i9, the finger has angular or cam surfaces 20, 2i, note Fig. 2, adapted to be engaged by the ring 22 of a suitable pull 23 to raise the lock pin end 24 of the finger out of the channel of the slider or, in other words, out of the path of movement of the scoops I through said slider.

The pin end 24 extends in an outwardly and downwardly inclined direction, as clearly seen in Fig. 2 and, when in operative position, rests upon a bevelled wall 25 of an aperture 26 formed in the top wall Il of the slider.v Also, as seen in Fig.v 2, the lock pin end 24 of the lock finger joins the adjacent cam surface 2l in a substantially straight offset portion 21 which is adapted to seat upon the top wall of the slider and be supported on said wall under spring tension. In other words, the spring nger is at all times maintained in locked position and is only displaced from the locked position by the operation of the pull to move the slider along the stringers in either direction.

Arranged upon and extending longitudinally of the wall I l of the slider is a bar-like member 28 having an elongated channel 29 opening through the inner surface thereof and in which the nger I'I is free to operate, sufficient clearance being provided to prevent any binding engagement. The bar-like member 28 is secured to the slider wall by providing on said wall substantially U-shaped sockets 3i) and 3| at the narrow and wide ends of the slider and by providing outwardly flanged ends 30', 3| on the member 28 engaged by turning or peening in the walls of the sockets 30, 3l, for example, as indicated at 32 in Fig. 3 of the drawing.

The end of the member 28, adjacent the pin l5, includes a recess 33 to receive the pin, as well as the ring end I5 of the nger I1. It will also appear that the side walls of the member 28 have elongated recesses 34 to provide for movement of the ring 22 of the pull longitudinally of said member to engage the cam surfaces 20, 2l of the lock finger. The aperture 26, in the slider wall, will be of sufcient width to allow slight lateral movement of the pin end 24 of the lock finger to enter the recessed portions 35 of the scoops, as indicated in Fig. 3 of the drawing, the pin being of sufficient length to engage these recessed portions of the scoops and will be definitely secured in the beveled portion of a scoop when the slider is strained in the opening direction, thus positively securing the slider against opening movement on the stringers. By virtue oi the angular arrangement of the lock pin end 24 of the nger I7, the slider may be moved independent of the pull along the stringers to couple the same, in which event the finger will ratchet over the scoops. However, in the normal uses, the slider is moved in both directions by the pull and, in such operations, the finger 24 will, at all times, be withdrawn from the path of movement of the scoops through the slider, thus providing a free action of the slider along the stringers.

In Fig. 6 of the drawing is illustrated a diagrammatic sectional view, showing the slider applied to stringers having scoops of V-shaped cross sectional form, as disclosed for example, in the application of Louis H. Morin, Serial Number 531,618, led April 18, 1944 which matured as Patent No. 2,493,303, January 3, 1950.

In Fig. 6 is shown the cross section of two scoops 36 of one Stringer, and two scoops 31 of the companion stringer. Each of these scoopsis of the same form in longitudinal section as the scoops l shown in Fig. 1 of the drawing, particularly with respect to the diamond head and V- shaped recesses, and diiers from the scoop 'i in the V-shaped cross sectional form which provides longitudinal channels 38 onone surface of the scoops and projecting ridges 39 on the other surface thereof, which provides coupling between the scoops of opposed stringers preventing transverse separation. The scoops taper outwardly in the direction of opposite sides thereof to form recesses, as at 40 between adjacent coupled scoops and these recesses are adapted to receive the pin end 4l of a lock nger 42, similar in all respects to the linger l1.

In Fig. 6, a part of the top wall of the slider is indicated at d3, and at 44 is shown the opening similar to the opening 25. At 45 is shown part of the bottom wall. With this construction, it will be apparent that the lock nger Il! enters the channelled or recessed side 38 of a scoop at the clearance provided at 0, in locking the slider against opening movement along the stringers.

In consideringthe slider froma standpoint of production, it will be apparent that the slider body is of simple construction and comprises two parts or elements, both of which in the construction shown, are in the form of die castings, the parts being the slider body i and the bar member 28. The structure is further simplied from the standpoint that the body I0 includes as an integral part thereof, the stud or pin I5 forming the rivet mounting for the nger I1. appear that the member 28 is secured to the part l0 without the use of screws, bolts and similar fasteners,

It will also 5 l slider, said finger having one end thereof extend- 5 Number ing through said aperture and its other end supported by said stud, said wall of the slider at both end portions thereof having substantially U- shaped sockets, and a U-shaped pull bar adapted for coupling with the socket portions of said Wall of the slider.

2. A slider for separable fastener stringers of the kindvdened, said slider comprising a channeled body defined by walls spaced and coupled by a connecting web at one wide end of said walls, one wall of the slider having at the narrow end thereof an aperture opening into the channel of said body, the other Wide end of said wall having an outwardly directed stud, a spring locking nnger arranged longitudinally of saidfwall of the slider, said nger having one end thereof extending through said aperture and its other end supported by said stud, said wall of the slider at both end portions thereof having substantially U- shaped sockets, a U-shaped pull bar adapted for coupling with the socket portions of said wall of the slider, and the ends of said bar and the walls of said sockets having interengaging ange p0rtions securing the bar against,A displacement from said wall of the slider.

DAVIS MARINSKY.

REFERENCES CITED The following references are of record in the file oi this patent:

UNITED STATES PATENTS Number FOREIGN PATENTS Country Date 417,781 Great Britain Oct. 11, 1934 

